公开(公告)号：US20140205036A1

公开(公告)日：2014-07-24

申请号：US14221122

申请日：2014-03-20

Applicant: QUALCOMM Incorporated

Inventor： Byoung-Hoon Kim

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/04 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/0656 ,  H04L1/0675

Abstract: Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.

Abstract translation: 通过减少为在下行链路MIMO信道上调整数据速率而提供信道性能反馈所需的上行链路资源的量来改善MIMO无线通信系统的性能的系统和方法。 在一个实施例中，一种方法包括根据对应的数据速率对一组数据流中的每一个进行编码，根据组合的全部置换来置换一组MIMO信道上的数据流，发送置换的数据流，接收置换的数据流 解码和确定每个数据流的SNR，计算所述数据流集合的精简SNR度量，提供所述精简度量作为反馈，基于所述精简SNR度量确定所述数据流的各个SNR度量的集合， 以及基于各个SNR度量来调整数据流被编码的数据速率。

公开(公告)号：US08767885B2

公开(公告)日：2014-07-01

申请号：US13287912

申请日：2011-11-02

Applicant: Hemanth Sampath ,  Tamer Kadous

Inventor： Hemanth Sampath ,  Tamer Kadous

IPC: H04L27/06

CPC classification number: H04B7/12 ,  H04B1/1027 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0656 ,  H04L1/0675 ,  H04L25/03242 ,  H04L2025/03426

Abstract: Systems and methodologies are described that facilitate integrating a list-sphere decoding design in a multiple input-multiple output (MIMO wireless communication environment. According to various aspects, optimal rank selection and CQI computation for an optimal rank can be performed in conjunction with a non-linear receiver, such as a maximum life (ML) MMSE receiver, a non-linear receiver with a list-sphere decoder, and the like. Optimal rank selection can be performed using a maximum rank selection protocol, a channel capacity-based protocol, or any other suitable protocol that facilitates rank selection, and CQI information can be generated based in part on effective SNRs determined with regard to a selected optimal rank.

Abstract translation: 描述了有助于将多个输入多输出（MIMO无线通信环境）中的列表球体解码设计进行集成的系统和方法，根据各个方面，最佳秩选择和最佳秩的CQI计算可以结合非 - 线性接收机，例如最大寿命（ML）MMSE接收机，具有列表球体解码器的非线性接收机等。最佳秩选择可以使用最大秩选择协议，基于信道容量的协议 或有助于等级选择的任何其它合适的协议，并且可以部分地基于针对所选择的最优等级确定的有效SNR来生成CQI信息。

公开(公告)号：US08718009B2

公开(公告)日：2014-05-06

申请号：US13959151

申请日：2013-08-05

Applicant: Sony Corporation

Inventor： Shinichi Kuroda

IPC: H04W4/00

CPC classification number: H04L25/0224 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0619 ,  H04B7/0665 ,  H04B7/0854 ,  H04B7/0862 ,  H04L1/0656 ,  H04L25/0202 ,  H04L27/12 ,  H04L27/2601 ,  H04L2025/0377 ,  H04W72/0406

Abstract: In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.

Abstract translation: 在执行SVD-MIMO传输时，简化了建立过程，同时确保了具有减少数量的天线的令人满意的解码能力。 发射机基于从接收机发送的参考信号估计信道信息，基于信道信息确定发射天线加权系数矩阵，计算要分配给复用信号的每个分量的权重，并向接收机发送训练 对于各个信号分量的信号，训练信号由所计算的权重加权。 另一方面，接收机基于接收到的训练信号来确定接收天线加权系数矩阵。

公开(公告)号：US08660224B2

公开(公告)日：2014-02-25

申请号：US13859582

申请日：2013-04-09

Applicant: Broadcom Corporation

Inventor： Mark Kent ,  Vinko Erceg ,  Uri M. Landau ,  Pieter Van Rooyen ,  Pieter Roux

IPC: H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC classification number: H04B7/0417 ,  H04B7/0697 ,  H04L1/0656 ,  H04L25/0204 ,  H04L25/0214 ,  H04L25/0244 ,  H04L25/025 ,  H04L25/03019 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03726 ,  H04L2025/03808

Abstract: Certain aspects of the method may comprise receiving a plurality of spatially multiplexed communication signals from a plurality of transmit antennas at a base station. A plurality of vectors of baseband combined channel estimates may be generated based on phase rotation of the received plurality of spatially multiplexed communication signals. A plurality of pre-equalization weights may be generated based on the generated plurality of vectors of baseband combined channel estimates. The received plurality of spatially multiplexed communication signals may be modified based on the generated plurality of pre-equalization weights. At least a portion of the generated plurality of pre-equalization weights may be fed back to the base station for modifying subsequently transmitted spatially multiplexed communication signals which are transmitted from at least a portion of the plurality of transmit antennas at the base station.

Abstract translation: 该方法的某些方面可以包括在基站处从多个发射天线接收多个空间复用的通信信号。 可以基于所接收的多个空间复用通信信号的相位旋转来生成基带组合信道估计的多个向量。 可以基于所生成的多个基带组合信道估计向量来生成多个预均衡权重。 可以基于所生成的多个预均衡权重来修改所接收的多个空间复用的通信信号。 所生成的多个预均衡权重中的至少一部分可以反馈给基站，以便修改在基站处从多个发射天线的至少一部分发送的随后发送的空间复用的通信信号。

公开(公告)号：US20130315327A1

公开(公告)日：2013-11-28

申请号：US13953812

申请日：2013-07-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Yanmeng Sun

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B1/04 ,  H04L1/0001 ,  H04L1/0015 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0656 ,  H04L1/0687

Abstract: A MIMO ARC transmitter derives demux streams (15, 20) carrying different parts of the information, at given data rates, processes each demux stream by coding and modulation (25, 30) before transmission over the channels, and varies (50, 165) the coding or modulation according to channel conditions, and controls the data rates (50, 155) according to conditions of the channels independently of the variations in coding and modulation. The separate control of processing and of data rates for each demux stream can provide a better balance of rapid response to changing conditions and efficiency in less rapidly changing conditions. The frequency of updating the processing can be limited since these take more time to adapt in the receiver. Sensitivity to rapid changes can be achieved by the data rate changes since these involve less overhead than changes in the processing.

Abstract translation: MIMO ARC发射机以给定数据速率导出携带信息的不同部分的解复用流（15,20），在通过信道传输之前通过编码和调制（25,30）处理每个解复用流，并且变化（50,165） 根据信道条件的编码或调制，并且根据信道的条件独立于编码和调制的变化来控制数据速率（50,155）。 每个解码流的处理和数据速率的单独控制可以在不太快速变化的条件下提供对不断变化的条件和效率的快速响应的更好平衡。 可以限制更新处理的频率，因为这些在接收机中需要更多的时间来适应。 通过数据速率变化可以实现对快速变化的敏感度，因为这些变化涉及比处理更改的开销更少的开销。

公开(公告)号：US08520568B2

公开(公告)日：2013-08-27

申请号：US12096194

申请日：2006-12-07

Applicant: Yanmeng Sun

Inventor： Yanmeng Sun

IPC: H04J3/22 ,  H04J3/16 ,  H04B7/00

CPC classification number: H04B7/0417 ,  H04B1/04 ,  H04L1/0001 ,  H04L1/0015 ,  H04L1/0017 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0656 ,  H04L1/0687

Abstract: A MIMO ARC transmitter derives demux streams (15, 20) carrying different parts of the information, at given data rates, processes each demux stream by coding and modulation (25, 30) before transmission over the channels, and varies (50, 165) the coding or modulation according to channel conditions, and controls the data rates (50, 155) according to conditions of the channels independently of the variations in coding and modulation. The separate control of processing and of data rates for each demux stream can provide a better balance of rapid response to changing conditions and efficiency in less rapidly changing conditions. The frequency of updating the processing can be limited since these take more time to adapt in the receiver. Sensitivity to rapid changes can be achieved by the data rate changes since these involve less overhead than changes in the processing.

Abstract translation: MIMO ARC发射机以给定数据速率导出携带信息的不同部分的解复用流（15,20），在通过信道传输之前通过编码和调制（25,30）处理每个解复用流，并且变化（50,165） 根据信道条件的编码或调制，并且根据信道的条件独立于编码和调制的变化来控制数据速率（50,155）。 每个解码流的处理和数据速率的单独控制可以在不太快速变化的条件下提供对不断变化的条件和效率的快速响应的更好平衡。 可以限制更新处理的频率，因为这些在接收机中需要更多的时间来适应。 通过数据速率变化可以实现对快速变化的敏感度，因为这些变化涉及比处理更改的开销更少的开销。

公开(公告)号：US20130156123A1

公开(公告)日：2013-06-20

申请号：US13766790

申请日：2013-02-14

Applicant: Marvell World Trade Ltd.

Inventor： Yona Perets ,  Krishna Srikanth Gomadam ,  Adoram Erell ,  Daniel Yellin ,  Ezer Melzer

IPC: H04B7/04

CPC classification number: H04B7/0473 ,  H04L1/0009 ,  H04L1/0656 ,  H04L1/0675 ,  H04L5/0025

Abstract: A method for communication includes, in a transmitter having a first number of transmit antenna ports, setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver.

Abstract translation: 一种用于通信的方法包括：在具有第一数量的发射天线端口的发射机中，将发射机使用的第二数量的空间层的上限设置为小于第一数量。 空间层的实际数量（不超过上限）被分配用于传送给给定的接收机。 调制符号的一个或多个流被映射到所分配的实际数量的空间层上。 空间层的实际数量从发射机发射到给定的接收机。

公开(公告)号：US20130136050A1

公开(公告)日：2013-05-30

申请号：US13700754

申请日：2011-05-13

Applicant: Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

Inventor： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04B7/0452 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0656 ,  H04L25/4975 ,  H04L27/2601

Abstract: To realize transmission performances equivalent to those of an MU-MIMO BLAST ZF-THP system without increasing a signal processing amount in a base station apparatus in a downlink MU-MIMO transmission system. A transmission apparatus is provided with a plurality of transmission antennas, generates a transmission signal addressed to each reception apparatus based on information indicating spatial correlation of channels to and from a plurality of reception apparatuses, space-multiplexes the generated each transmission signal in the same wireless resource, and transmits it to each reception apparatus. The transmission apparatus includes: an ordering determination part 601 which determines an order in which a transmission signal addressed to each reception apparatus is generated based on information indicating spatial correlation of channels; a linear filter generation part 603 which generates a linear filter based on the determined order; a THP part 605 which performs a THP process by using the determined order and the linear filter; and a linear filter multiplication part 607 which multiplies an output of the THP part 605 by the linear filter.

Abstract translation: 实现与MIMO-MIMO BLAST ZF-THP系统相当的传输性能，而不增加下行MU-MIMO传输系统中的基站装置中的信号处理量。 发送装置具有多个发送天线，基于表示与多个接收装置的频道的频道的空间相关性的信息，生成发往各接收装置的发送信号，对同一无线电中产生的各发送信号进行空间复用 资源，并将其发送到每个接收装置。 传输装置包括：排序确定部分601，其基于指示信道的空间相关性的信息来确定寻址到每个接收装置的发送信号的顺序; 线性滤波器生成部603，其基于所确定的次序生成线性滤波器; 通过使用确定的顺序执行THP处理的THP部件605和线性滤波器; 线性滤波器乘法部607，其将THP部605的输出与线性滤波器相乘。

公开(公告)号：US20130128820A1

公开(公告)日：2013-05-23

申请号：US13265639

申请日：2010-04-21

Applicant: Sophie Vrzic ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma ,  Jianglei Ma

Inventor： Jun Yuan ,  Sophie Vrzic ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma ,  Jianglei Ma

IPC: H04W72/08 ,  H04B7/04

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0623 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0686 ,  H04B17/373 ,  H04L1/0005 ,  H04L1/0016 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0656 ,  H04W36/385 ,  H04W88/08

Abstract: In order to minimize the control signaling overhead associated with transmitting CQI data from mobile stations to base stations in wireless communication networks supporting MU-MIMO, the CQI during MU-MIMO operation is estimated based on SU-MIMO CQI data, mobile station geometry data, and mobile station PMI (Precoding Matrix Index) data. More particularly, the base station maintains and updates a knowledge pool that correlates geometry data and learned impact of interfering precoder data to degradation of CQI values responsive to switching from SU-MIMO operation to MU-MIMO operations. Then, when the base station switches from SU-MIMO operation to MU-MIMO operation, it consults the knowledge pool to predict the degradation in CQI and subtracts them from the known, pre-switching SU-MIMO CQI feedback data for each relevant mobile station to predict the post-switching MU-MIMO CQIs for that mobile station.

Abstract translation: 为了最小化支持MU-MIMO的无线通信网络中的将CQI数据从移动站发送到基站的控制信令开销，基于SU-MIMO CQI数据，移动站几何数据， 和移动台PMI（预编码矩阵索引）数据。 更具体地，基站维护和更新将几何数据与学习的干扰预编码器数据的影响相关联的知识库与响应于从SU-MIMO操作切换到MU-MIMO操作的CQI值劣化。 然后，当基站从SU-MIMO操作切换到MU-MIMO操作时，它咨询知识库以预测CQI中的劣化，并从每个相关移动站的已知的预切换SU-MIMO CQI反馈数据中减去它们 以预测该移动台的后切换MU-MIMO CQI。

公开(公告)号：US20120281661A1

公开(公告)日：2012-11-08

申请号：US13548476

申请日：2012-07-13

Applicant: Shinichi KURODA

Inventor： Shinichi KURODA

IPC: H04W72/04

CPC classification number: H04L25/0224 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0619 ,  H04B7/0665 ,  H04B7/0854 ,  H04B7/0862 ,  H04L1/0656 ,  H04L25/0202 ,  H04L27/12 ,  H04L27/2601 ,  H04L2025/0377 ,  H04W72/0406

Abstract: In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.

Abstract translation: 在执行SVD-MIMO传输时，简化了建立过程，同时确保了具有减少数量的天线的令人满意的解码能力。 发射机基于从接收机发送的参考信号估计信道信息，基于信道信息确定发射天线加权系数矩阵，计算要分配给复用信号的每个分量的权重，并向接收机发送训练 对于各个信号分量的信号，训练信号由所计算的权重加权。 另一方面，接收机基于接收到的训练信号来确定接收天线加权系数矩阵。